David Herzfeld resumes & CV records
Resumes
David Herzfeld
David Herzfeld
Location:
Fairfield, IA
Industry:
Research
David H Herzfeld, Age 741100 D St, Fairfield, IA 52556
David Herzfeld Phones & Addresses
1100 D St, Fairfield, IA 52556 (641) 469-5636
Hartsdale, NY
280 Whispering Hills Rd, Boone, NC 28607 (828) 266-9715
Avon Lake, OH
New Haven, CT
Work
Position:
Service Occupations
Education
Degree:
Bachelor's degree or higher
Emails
Mentions for David H Herzfeld
Publications & IP owners
Us Patents
Circuit Breaker With Independent Trip And Reset Lockout
US Patent:
6717782, Apr 6, 2004
Filed:
Sep 12, 2001
Appl. No.:
09/950733
Inventors:
Nicholas L. DiSalvo - Levittown NY
William R. Ziegler - East Northport NY
Frantz Germain - Rosedale NY
David Herzfeld - Huntington NY
Stephen Stewart - Uniondale NY
Roger M. Bradley - North Belmore NY
William R. Ziegler - East Northport NY
Frantz Germain - Rosedale NY
David Herzfeld - Huntington NY
Stephen Stewart - Uniondale NY
Roger M. Bradley - North Belmore NY
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H02H 300
US Classification:
361 42
Abstract:
Resettable circuit breakers having an independent trip mechanism and a reset lockout are provided. The trip mechanism operates independently of the fault protection operations, and the reset lockout prevents the resetting of the circuit breaker if the fault protection is non-operational or if an open neutral condition exists.
Reset Lockout For Sliding Latch Gfci
US Patent:
7031125, Apr 18, 2006
Filed:
Mar 20, 2001
Appl. No.:
09/812875
Inventors:
Frantz Germain - Rosedale NY, US
Stephen Stewart - Uniondale NY, US
David Herzfeld - Huntington NY, US
Steve Campolo - Malverne NY, US
Nicholas L. DiSalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Stephen Stewart - Uniondale NY, US
David Herzfeld - Huntington NY, US
Steve Campolo - Malverne NY, US
Nicholas L. DiSalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H02H 9/08
US Classification:
361 42, 361 43
Abstract:
Resettable circuit interrupting devices using a center latch are provided. The circuit interrupting devices include those with a reset lockout, reverse wiring protection, and/or an independent trip portion.
Leakage Current Detection Interrupter Extension Cord With Cord Diagnostics
US Patent:
7136266, Nov 14, 2006
Filed:
Sep 22, 2003
Appl. No.:
10/664851
Inventors:
Bernard J. Gershen - Centerport NY, US
Steve Campolo - Malverne NY, US
James Richter - Bayside NY, US
Lester Rivera - Glendale NY, US
David Herzfeld - Huntington NY, US
Roger M. Bradley - North Bellmore NY, US
Steve Campolo - Malverne NY, US
James Richter - Bayside NY, US
Lester Rivera - Glendale NY, US
David Herzfeld - Huntington NY, US
Roger M. Bradley - North Bellmore NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H02H 3/00
US Classification:
361 42
Abstract:
In the present invention the basic detection and interruption components of an Immersion Detection Circuit Interrupter (IDCI), in combination with the line, neutral and shield conductors of an extension or appliance cord provides a new improved type of detector, a Leakage Current Detector Interrupter (LCDI) which interrupts current to a load when current leakage is detected between the line or neutral conductors of the cord and the shield conductor. The new improved LCDI detector provides, either singularly or in combination, the following advantages: Prevents the LCDI from being reset should the device become inoperative (reset lockout); Provides an indication of the integrity of the shield in the extension or appliance cord; Tests the integrity of the shield within the extension or appliance cord, in addition to testing the functionality of the LCDI; Interrupts current to the load if an electrical connection is detected between the shield and neutral, or the shield and ground, in addition to the existing detection of leakage current from the phase conductor; Allows the LCDI to trip during an open neutral condition by utilizing the ground connection as a return wire for the trip coil; and/or Provides immersion detection at the receptacle end of the extension cord in addition to protection from leakage faults.
Circuit Breaker With Independent Trip And Reset Lockout
US Patent:
7378927, May 27, 2008
Filed:
Apr 5, 2004
Appl. No.:
10/818626
Inventors:
Nicholas L. DiSalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Frantz Germain - Rosedale NY, US
David Herzfeld - Huntington NY, US
Stephen Stewart - Uniondale NY, US
Roger M. Bradley - North Belmore NY, US
William R. Ziegler - East Northport NY, US
Frantz Germain - Rosedale NY, US
David Herzfeld - Huntington NY, US
Stephen Stewart - Uniondale NY, US
Roger M. Bradley - North Belmore NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H01H 73/00
US Classification:
335 18, 335 24, 335 26, 361 42
Abstract:
Resettable circuit breakers having an independent trip mechanism and a reset lockout are provided. The trip mechanism operates independently of the fault protection operations, and the reset lockout prevents the resetting of the circuit breaker if the fault protection is non-operational or if an open neutral condition exists.
Reset Lockout For Sliding Latch Gfci
US Patent:
7492558, Feb 17, 2009
Filed:
Apr 17, 2006
Appl. No.:
11/405298
Inventors:
Frantz Germain - Rosedale NY, US
Stephen Stewart - Uniondale NY, US
David Herzfeld - Huntington NY, US
Steve Campolo - Malverne NY, US
Nicholas L. Disalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Stephen Stewart - Uniondale NY, US
David Herzfeld - Huntington NY, US
Steve Campolo - Malverne NY, US
Nicholas L. Disalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H02H 3/16
US Classification:
361 42, 361 44
Abstract:
Resettable circuit interrupting devices using a center latch are provided. The circuit interrupting devices include those with a reset lockout, reverse wiring protection, and/or an independent trip portion.
Circuit Breaker With Independent Trip And Reset Lockout
US Patent:
7545244, Jun 9, 2009
Filed:
Apr 10, 2008
Appl. No.:
12/100719
Inventors:
Nicholas L. DiSalvo - Levittown NY, US
William R. Ziegler - East Northport NY, US
Frantz Germain - Rosedale NY, US
David Herzfeld - Huntington NY, US
Stephen Stewart - Uniondale NY, US
Roger M. Bradley - North Belmore NY, US
William R. Ziegler - East Northport NY, US
Frantz Germain - Rosedale NY, US
David Herzfeld - Huntington NY, US
Stephen Stewart - Uniondale NY, US
Roger M. Bradley - North Belmore NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H01H 73/00
US Classification:
335 18, 335 24, 335 26, 361 42
Abstract:
Resettable circuit breakers having an independent trip mechanism and a reset lockout are provided. The trip mechanism operates independently of the fault protection operations, and the reset lockout prevents the resetting of the circuit breaker if the fault protection is non-operational or if an open neutral condition exists.
Circuit Interrupting Device And System Utilizing Bridge Contact Mechanism And Reset Lockout
US Patent:
7737809, Jun 15, 2010
Filed:
Oct 22, 2003
Appl. No.:
10/690776
Inventors:
Frantz Germain - Rosedale NY, US
James Richter - Bayside NY, US
David Herzfeld - Huntington NY, US
Armando Calixto - Floral Park NY, US
David Chan - Bellerose NY, US
Stephen Stewart - Berrien Springs MI, US
James Richter - Bayside NY, US
David Herzfeld - Huntington NY, US
Armando Calixto - Floral Park NY, US
David Chan - Bellerose NY, US
Stephen Stewart - Berrien Springs MI, US
Assignee:
Leviton Manufacturing Co., Inc. - Little Neck NY
International Classification:
H01H 73/00
H02H 3/00
H02H 3/00
US Classification:
335 18, 361 42
Abstract:
A GFCI device which has reverse wiring protection is provided where no power is present at the face terminals even when the device is reverse wired. The device has a pair of movable bridges connected to its terminals. The terminal bridge pair makes contact with the load and face terminals providing power to these terminals when the device is reset. The device also has a reset lockout feature that prevents it from being reset after having been tripped if the circuit interrupting portion of the device is non-operational.
Circuit Interrupter Having At Least One Indicator
US Patent:
8004804, Aug 23, 2011
Filed:
Feb 13, 2009
Appl. No.:
12/371141
Inventors:
Frantz Germain - Rosedale NY, US
David Herzfeld - Huntington NY, US
John J. Power - Westbury NY, US
Armando Calixto - Floral Park NY, US
David Herzfeld - Huntington NY, US
John J. Power - Westbury NY, US
Armando Calixto - Floral Park NY, US
Assignee:
Leviton Manufacturing Co., Inc. - Melville NY
International Classification:
H02H 3/16
US Classification:
361 42, 361 44
Abstract:
Resettable circuit interrupting devices using a center latch are provided. The circuit interrupting devices include those with a reset lockout, reverse wiring protection, and/or an independent trip portion.
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